Mechanical property testing method based on atomic force microscope probe

Abstract

The invention discloses a mechanical property testing method based on atomic force microscope probe. The method comprises: fixing an atomic force microscope probe to the top end of a Z-axis mobile platform at the in-situ detection device of a scanning electronic microscope; placing a sample consisting of carbon nanotubes and resin composite materials in a sample placement region; moving the X-axis platform and the Y-axis platform; letting the atomic force microscope probe in contact with the sample and then letting them attached through electronic beam radiation; starting the photographing of the electronic microscope and moving the X-axis platform and the Y-axis platform so as to draw the sample out of the single carbon nanotube; according to the photographed multi-frame continuous images, obtaining the displacement of the atomic force microscope when the single carbon nanotube is drawn out as well as the elasticity coefficient of the atomic force microscope so as to obtain the interface mechanical performance between the single carbon nanotube and the resin. The method of the invention realizes the dynamic in-situ observation of a material from nanometer scale to micrometer scale, and can test its mechanical properties at the same time.

Description

technical field [0001] The invention relates to the technical field of testing instruments, in particular to a method for testing mechanical properties based on an atomic force microscope probe. Background technique [0002] Nanomaterials and nanotechnology are one of the research fields that countries have paid great attention to and paid attention to in recent years. When the size of a substance is reduced to the nanometer level, its physical properties, chemical properties, and other properties will be greatly different or even completely different from those it exhibits at the macroscopic level (micron millimeter level) . The unique properties endowed by the nanoscale to various materials have also attracted more and more researchers and institutions to engage in scientific research and technological development of nanomaterials. [0003] Take carbon nanotube materials as an example. Carbon nanotubes are typical one-dimensional nanomaterials, which have excellent mech...

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a mechanical property testing method based on an atomic force microscope probe, aiming to solve the problem that the testing instrument in the prior art cannot complete the measurement of nanometer materials such as carbon nanotubes and graphene. Mechanical properties of materials to test and characterize deficiencies

Images